On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 9
... branch be examined a little later , it will be found to be terminated by a scar , left by the true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end ...
... branch be examined a little later , it will be found to be terminated by a scar , left by the true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end ...
Pagina 94
... branch , and one fork may remain a simple pointed hair , while another develops a gland . The glandular processes are sometimes highly deve- loped ; as , for instance , in the Rose and the Violet , where they are large and oval , one ...
... branch , and one fork may remain a simple pointed hair , while another develops a gland . The glandular processes are sometimes highly deve- loped ; as , for instance , in the Rose and the Violet , where they are large and oval , one ...
Pagina 134
... branch is examined , the scars where the stipules were inserted may be seen , forming rings ( figs . 210 , 211 ) round the base of each annual shoot . The shoot elongates considerably between the leaves , but not between the stipules ...
... branch is examined , the scars where the stipules were inserted may be seen , forming rings ( figs . 210 , 211 ) round the base of each annual shoot . The shoot elongates considerably between the leaves , but not between the stipules ...
Pagina 139
... branches on the expansion of the primary bud , but remain small . Accidents to the primary bud , however , would , of course , cause them to develop . The following is the composition of a flower - bud— that is , one containing catkins ...
... branches on the expansion of the primary bud , but remain small . Accidents to the primary bud , however , would , of course , cause them to develop . The following is the composition of a flower - bud— that is , one containing catkins ...
Pagina 147
... branches or shoots bearing them . The leaves are all conduplicate in bud , acuminate , and penninerved , with closely approximate nerves . The two parts of the leaf are unequal , but this is scarcely discernible in the bud . The broader ...
... branches or shoots bearing them . The leaves are all conduplicate in bud , acuminate , and penninerved , with closely approximate nerves . The two parts of the leaf are unequal , but this is scarcely discernible in the bud . The broader ...
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Termeni și expresii frecvente
apex axil axillary buds axis base Beech blade brown bud is protected bud-scales Candolle completely covered concave conduplicate connate stipules cotyledons developed edges Edition Exochorda exstipulate fifth folded foliaceous fourth genera genus glabrous glands growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut inner instance lamina Lantana lateral buds Lathyrus Aphaca Lathyrus Nissolia leaf leaf-base leaf-blade leaf-stalk leaflets length less lobes lower membranous midrib Monocotyledons narrow node ocrea Opulus outer scales ovate pair of leaves pair of stipules pedestal persistent petiole Petteria PLANE Platanus plant Polygonum protect the bud protect the young Robinia scale fig scar sheath shoot showing side slightly Smilax sometimes species St FIG St St stalk stem stipular stipules belonging stipules fig stipules St subulate tendrils terminal bud trees triangular Tulip Tree upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young bud young leaves younger
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Pagina 233 - So careless of the single life, So careful of the type she seems, and will be more and more struck with wonder and admiration at the variety and beauty of the provisions by which Nature preserves these tender and precious buds from the severity of winter, and prepares with loving care and rich profusion for the bright promise of spring and the glorious pageant of summer.
Pagina 194 - ASSISTANCE IN CLIMBING There are two ways in which stipules may assist in this respect, viz. (1) by being developed into tendrils, or (2) into more or less reversed spines. The case of the tendrils of Smilax is one which has occasioned much discussion, but I agree with Tyler (24) that the embryological, together with the anatomical, characters indicate that in Smilax the tendrils are true stipules, found in connection with the sheathing petiole. In Paliurvs australis (fig.
Pagina 4 - The figure also shows how admirably the peculiar form of the leaf is adapted to their mode of growth. In many other plants also the leaves, as they develop, successively protect the younger ones. A somewhat similar case is afforded by Uvaria (figs. 105, 106, p. 70) ; and also by common Rhubarb, FIG.